Angle between action and reaction forces is:
Correct answer: C. π rad
- A. 0°
- B. π/2 rad
- C. π rad
- D. 2π rad
Explanation
By Newton's third law action and reaction forces are equal in magnitude and opposite in direction; the angle between them is 180°, i.e. π radians.
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Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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